Together with his brothers, Byakko discovers the German Shepherd, Jerome when he enters Hokkaidō. They take him to their father, where they discuss the threat of Victor, who has entered Hokkaidō as well. Shortly after Jerome has left, Byakko and his brothers bump into him again. This time, Jerome is seriously wounded after a fight with Victor.

Byakko takes Jerome to the Collie, Ram, where he can stay in safety until his wounds has healed. Byakko then return to their father to plan an attack on Victor’s pack to remove him from their island. However, they get ambushed during their planning, where Victor’s pack attack with full force. Byakko gets killed by Maxim during the fight.